R. Giskard Reventlov, from the Robot stories by Isaac AsimovRead about the other entries on the list.
A lot of the robots in Asimov's novels are interesting more as concepts than characters, but this one is different. As an unintended result of experiments carried out on him by the daughter of a famous roboticist, he ends up being able to read and influence emotions. ('Emotions are readily apparent, thoughts are not'.) His telepathy leads to a desire to save humanity. The 'R' stands for robot.
Susan Calvin from I, Robot is on io9's list of the ten greatest (fictional) female scientists. The Naked Sun is one of Joel Cunningham's five books that predicted the internet.
Also see: The six most memorable robots in literature and ten books that will change the way you look at robots.
--Marshal Zeringue